Signors to the skamlkss structural coml axy



(No Mode.) v

` L. WHITE & B. S. BIGELUW. JOINT AND METALLIC GYLINDER AND METHOD OP PRODUGING THE SAME.

Patnted Feb. 2,1892.

UNITED STATES L'YMAN 'WHITE AND ill'lllli H. lllGELUViQ-OF lllllYAl'Kll, \VIS(()NSIN,

PATENT OFFICE.

lOlNl' AND METALLlC CYLlN-DER AND METHOD 0F PRODUClNG -THE SAME.

SPECIFICATIQN forming part of Letters Patent No. 468,298, dated February 2, 1892.

Application tiled April 13, 1891. Serial No. 388,653. (No moilclJ .To rtl/- whom, it muy Poner/w.:

Allc it known that we, LYMAN lVui'rrl and .lliYEL s ilIi-iELOW, both of Milwaukee. i-n vthe county-of` Milwaukee and State of Wisconsin,

have 'invented' ceri-nin new and useful linprovcnlcnts in Joints and )Iethod of Producing the Haine for Metallic Cylinders, Jcc.; and we do hereby declare that the following is a full, clear, and exact description of the invenio lion, which will enable others skilled in the nrt to' which it pertains to make and use the saine, reference seing had te the aecoinLi-iiiying drawings, and to the letter-sof reference marked thereon, which forni a part of this specification'.

The object of our invention is to unite the sections of various kinds of metallic tubes, cylinders, and the like by a strong, tight, and durable joint.

lt consists of certain peculiarities in the construction of the joint and in the method of forming the same, hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings like letters designate the same partsin the several figures.

'Figure l is a cross-section of the joint taken in a plane cutting the axis ot' the cylinder at right angles. Fig. 2 is a longitudinal section 3o on the line a: Fig. and Fig. 3 is a similar section on the line y y, Fig. 1.

A and B represent the sections to be united.

Section Il is contracted at one end, as shown in Figs. 2 and 3, sull'iciently to lit inside of.

3 5 the adjacent end of section A, with which it is to be united. In the outeriaces ci the sections to be joined are impressed longitudinal grooves or indentations a. b. The indentations a iit on the inside into the grooves b in 4o section l. "lwoor more set-s of these grooves or depressions are preferably made in opposite sides of the sections, as shown in Fig. 1, but a single groove in each section is snficient to produce the joint.

C represents a band, which is placed, as shown in Fig. 3, around the joint and fitted snugly to the outside of the sections, projectf ing a short distance over the edge of section A, so as to cover the contracted portionfof sec- 5o tion B, exposed beyond the edge of section A,

and to form an annular channel c, as shown in Figs. 3 and il. '.lhc edge of section ll is made to project a short distance above the adjacent edge oi the' hand C, which 1s placed so as to leave exposed the ends of the grooves a in section A,and thus aiord openings o. of sufiicient. size for the introduction of solder into the joint. The inner and outer surfaces of section A, the outer surface ot' section Il, and the inner surface of the hand@z which 6o overlap each other in forming the Joint, are first tinncd and then assembled as shown in the drawings, the section A being placed uppermost in a vertical position.t lleat 1s then applied to the outside of the Joint: This :nay be eiected bynieans ofii. ring, insideofwvhich the cylinder is placed, having a series of apertures or gasjets ou the inside, directed toward the cylinder. Solder is then poured into the openings a' at the upper edge of the 7e band C and flows through the grooves ci a into the annular channel c, from which it gradually finds its way into the interstices between the faces of the sections and the band C, surrounding them. The vertical grooves a are kept filled until the solder finds `its way to the upper edge of the band C entirely around the cylinder. The solder thus appeaiing around the entire upper edge of the band C indicates that it has completely {illed 8o the space between the outer face of section A and the band C, from the annular recess c to the upper edge of said band, and aiords certain proof that the overlapping edges of the joint are eectnally united. This 1s a 85 great advantage over the methods heretofore practiced of forming joints 'of this class, inasmuch as it has been impossible to determine with certainty whether the molten solder had found its way to all parts of the surfaces to 9o be united.

lWhile the joint is being formed the lower edge of rthe hand C is luted to prevent the solder frein escaping at that point. It has beenfound more or less diicult heretofore .to secure an even and certain flow of the molten solder to all parts of lthe joint. By the construction am1 method hereinbefore de scribed the vertical grooves or indentations c u and the annular recess c constitute a chanloo nel and reservoir from which the molten solder is readily and directly supplied to all ports of the joint. 'The grooves a, a also nfiord a, hond by which the solderis carried upward from the annular recess c between the surfaces to be united.-

NVe claiml. The method of joining sections of motelli c tubes, cylinders, and the like, which consists of producing a. longitudinal groove in the outer face of the overlnpping sectiominpping the ends, placing band around the lnp so es to inclosent the end of the overlapping Asection au annular recess communicating with one end of said groove, and filling said recess through said groove with molten solder-,thc sections to be joined being held in an upright position during th. '1. operation, substantially as andfor the purposes set forth.

2. The method of joining sections of metallic tubes, cylinders, and] the like, which consists of forming @longitudinal groove in the outer face of tlie overlapping' section, lapping the ends of the sections to be joined, placing a. bandnround the lap so as to inelose one end of said groove nud an annular recess at the' end of the overlapping section communieating. with said groove, heating the lnp and filling the interstices of the joint While hot' with molten solder by pouring the saule into the upper end of said groove, the sections to be united being held in an upright position during the operation, substantially as and for the purposes set forth.

2l. The method of joining sections of, metallic tubes,cylindcrs, andthe like, which con sists of fori'ning a longitudinal groove in the outer face of the overlapping section, lapping the ends of the sections to be joined, placing n bond around the lap so as to inclose one end of the said groove and an annular recess communicating. therewith :it theend of the overlapping section, und in filling said anl .nnlnr recess and groove with molten solder and keeping the same filled and in n molten condition -until the solder rises to the upper edge of snid band entirely around the joint,

substantially as and for the purposes set forth.

fi.. A joint forvunit'ing sections of niet-allie tubes, cylinders, and the like, comprising the lapped ends of the united sections, a, l0ngitudinal groove being formed in'tlie outer face of two witnesses.

' LYMAN WHITE.

- BUEL S. lBIGrI-ILOW. lf-Vitnesses:

FRANK A. KREHLA,

(time. L. Goss. 

